Phosphorous is required to synthesize the deoxyribonucleoside triphosphates used in DNA replication. A geneticist grows some E.
coli in a medium containing nonradioactive phosphorous for many generations. A sample of the bacteria is then transferred to a medium that contains a radioactive isotope of phosphorus (32P). Samples of the bacteria are removed immediately after the transfer and after one and two rounds of replication. Assume that newly synthesized DNA contains 32P and the original DNA contains nonradioactive phosphorous. What will be the distribution of radioactivity in the DNA of the bacteria in each sample? Immediately after the transfer After one round of replication After two rounds of replication Answer Bank
The answer is C: Lack Chlorophyll. Because fungi are heterothrophic, meaning they ingest food for their energy, instead of making it, meaning they don't use photosynthesis, and have no chlorophyll.
C) Viruses cannot reproduce outside a host cell and are therefore nonliving.
Explanation:
Viruses cannot reproduce outside a host cell and are therefore nonliving. Their cell walls are created from different substances and bacteria has an RNA polymerase that archaea lacks.
